Finding the Fourth Proportional to 929,100,628.80, 1,393,650,943.20 and 515,852,107.20
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Solution
The fourth proportional to 929,100,628.80, 1,393,650,943.20 and 515,852,107.20 is: 773,778,160.80
Step by Step Solution
- Step 1: Write the proportion equation
929,100,628.80 : 1,393,650,943.20 = 515,852,107.20 : x - Step 2: Convert to fraction form
929,100,628.80/1,393,650,943.20 = 515,852,107.20/x - Step 3: Cross multiply
929,100,628.80x = 1,393,650,943.20 × 515,852,107.20 - Step 4: Simplify right side
929,100,628.80x = 718,917,775,750,987,520 - Step 5: Solve for x
x = 718,917,775,750,987,520/929,100,628.80 - Step 6: Final answer
x = 773,778,160.80
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.